WO2013045905A1 - Électrode à base de polyanion condensé - Google Patents

Électrode à base de polyanion condensé Download PDF

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Publication number
WO2013045905A1
WO2013045905A1 PCT/GB2012/052363 GB2012052363W WO2013045905A1 WO 2013045905 A1 WO2013045905 A1 WO 2013045905A1 GB 2012052363 W GB2012052363 W GB 2012052363W WO 2013045905 A1 WO2013045905 A1 WO 2013045905A1
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Prior art keywords
electrode according
oxidation state
condensed
metals
electrode
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PCT/GB2012/052363
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English (en)
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WO2013045905A4 (fr
Inventor
Jeremy Barker
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Faradion Ltd
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Publication date
Application filed by Faradion Ltd filed Critical Faradion Ltd
Priority to US14/348,485 priority Critical patent/US9608269B2/en
Priority to EP12769157.4A priority patent/EP2761687B1/fr
Priority to KR1020147008636A priority patent/KR101961781B1/ko
Priority to CN201280047816.9A priority patent/CN103843178B/zh
Priority to PL12769157T priority patent/PL2761687T3/pl
Priority to JP2014532471A priority patent/JP6063468B2/ja
Priority to DK12769157.4T priority patent/DK2761687T3/en
Priority to ES12769157.4T priority patent/ES2565501T3/es
Publication of WO2013045905A1 publication Critical patent/WO2013045905A1/fr
Publication of WO2013045905A4 publication Critical patent/WO2013045905A4/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D13/00—Compounds of sodium or potassium not provided for elsewhere
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
    • H01M4/5825—Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/26—Phosphates
    • C01B25/38—Condensed phosphates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/26—Phosphates
    • C01B25/38—Condensed phosphates
    • C01B25/42—Pyrophosphates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G45/00—Compounds of manganese
    • C01G45/006—Compounds containing, besides manganese, two or more other elements, with the exception of oxygen or hydrogen
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G51/00—Compounds of cobalt
    • C01G51/006—Compounds containing, besides cobalt, two or more other elements, with the exception of oxygen or hydrogen
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G53/00—Compounds of nickel
    • C01G53/006—Compounds containing, besides nickel, two or more other elements, with the exception of oxygen or hydrogen
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/06—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances
    • H01B1/08—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances oxides
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/054—Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to electrodes that contain an active material comprising condensed polyanion materials, and to the use of such electrodes, for example in sodium ion battery applications.
  • the invention also relates to certain novel materials and to the use of these materials, for example as an electrode material.
  • Sodium-ion batteries are analogous in many ways to the lithium-ion batteries that are in common use today; they are both reusable secondary batteries that comprise an anode (negative electrode), a cathode (positive electrode) and an electrolyte material, both are capable of storing energy, and they both charge and discharge via a similar reaction mechanism.
  • Na + (or Li + ) ions de- intercalate and migrate towards the anode.
  • charge balancing electrons pass from the cathode through the external circuit containing the charger and into the anode of the battery. During discharge the same process occurs but in the opposite direction. Once a circuit is completed electrons pass back from the anode to the cathode and the Na + (or Li + ) ions travel back to the cathode.
  • Lithium-ion battery technology has enjoyed a lot of attention in recent years and provides the preferred portable battery for most electronic devices in use today; however lithium is not a cheap metal to source and is too expensive for use in large scale applications.
  • sodium-ion battery technology is still in its relative infancy but is seen as advantageous; sodium is much more abundant than lithium and researchers predict this will provide a cheaper and more durable way to store energy into the future, particularly for large scale applications such as storing energy on the electrical grid. Nevertheless a lot of work has yet to be done before sodium-ion batteries are a commercial reality.
  • the present invention aims to provide a cost effective electrode that contains an active material that is straightforward to manufacture and easy to handle and store.
  • a further object of the present invention is to provide an electrode that has a high initial charge capacity and which is capable of being recharged multiple times without significant loss in charge capacity.
  • an electrode that contains an active material comprising:
  • X is one or more of Na + , Li + and K + ;
  • M is one or more transition metals;
  • M' is one or more non-transition metals; and where a>b; c > 0; d > 0; e > 1 and f > 0.
  • the present invention provides an electrode as described above in which the active material comprises a transition metal selected from one or more of titanium, vanadium, niobium, tantalum, hafnium, chromium, molybdenum, tungsten, manganese, iron, osmium, cobalt, nickel, palladium, platinum, copper, silver, gold, zinc and cadmium; an optional non-transition metal selected from one or more of magnesium, calcium, beryllium, strontium, barium aluminium and boron; a condensed polyanion that comprises one or more of titanium, vanadium, chromium, molybdenum, tungsten, manganese, aluminium, boron, carbon, silicon, phosphorus, oxygen, sulfur, fluorine, chlorine, bromine and iodine; and an optional anion that may comprise one or more of halide, hydroxide, borate, nitrate, silicate, arsenate, sulfate, vanadate,
  • the condensed polyanion comprises one or more of phosphorus, boron, titanium, vanadium, molybdenum, and sulfur.
  • mono- (or sometimes call ortho-) phosphate (P0 4 ) 3" is especially preferred.
  • Mono-phosphates are derived from H 3 P0 4 acid and the (P0 4 ) 3" group is characterised by the presence of a central phosphorus atom surrounded by four oxygen atoms each located at the corners of a regular tetrahedron.
  • Particularly advantageous electrodes of the present invention employ a mixed phase material comprising Na + and one or more of Li + and K + .
  • a condensed polyanion is a negatively charged species formed by the condensation of two or more simple anions.
  • the species have structures that are mainly octahedral or tetrahedral or, sometimes, a mixture of both octahedral and tetrahedral.
  • Condensed polyanions are characterised by containing two or more central atoms which may either be the same or different from one another to give homopolyanions (iso-condensed polyanions) or hetero-condensed polyanions (mixed polyanions), respectively.
  • the central atoms may comprise one or more of titanium, vanadium, chromium, molybdenum, tungsten, manganese, aluminium, boron, carbon, silicon, nitrogen and phosphorus.
  • hetero-condensed polyanions include: V2W4O19 4" , NiMo 2 0 8 2" , CoMo 2 0 8 2" and MnMo 2 0 8 2" .
  • One or more dependent ligands are bound the central atoms, and these ligands may be selected from one or more of oxygen, hydroxide, sulfur, fluorine, chlorine, bromine and iodine. Not all of the dependent ligands attached to the central atom need to be the same, thus iso-ligand condensed polyanions (in which the ligands are all the same) and hetero- ligand condensed polyanions (in which the ligands are not all the same) are possible.
  • one or more of the ligands comprise one or more halide atoms; fluorine, bromine, iodine and chlorine, and in a further preferred hetero- ligand condensed polyanion, one or more of the ligands comprise oxygen and one or more of the other ligands comprise a halogen, for example: Mn 2 F 6 (P 2 0 7 ) 4 ⁇
  • a particularly preferred electrode according to the invention employs one or more condensed polyanions that comprise at least one of phosphorous, boron, titanium, vanadium, molybdenum, and sulfur.
  • electrodes containing an active material comprising a condensed polyanion based on phosphorous are particularly advantageous, especially those which comprise one or more phosphorus moieties selected from P 2 0 7 4" , P 3 O 9 5" and P 4 0n 6" .
  • Such condensed phosphate polyanions are anionic entities built from corner sharing P0 4 tetrahedra; the O/P ratio in the anion is 5/2 ⁇ O/P ⁇ 4.
  • oxyphosphate moieties are not to be confused with oxyphosphates which include in their atomic structure some oxygen atoms that do not belong in the anionic entity.
  • the oxyphosphate anion is characterised by the ratio 0/P>4.
  • M and M' are transition metals and non-transition metals respectively, as described above.
  • Electrodes according to the present invention are suitable for use in many different applications, for example energy storage devices, rechargeable batteries, electrochemical devices and electrochromic devices.
  • the electrodes according to the invention are used in conjunction with a counter electrode and one or more electrolyte materials.
  • the electrolyte materials may be any conventional or known materials and may comprise either aqueous electrolyte(s) or non-aqueous electrolyte(s) or mixtures thereof.
  • the active materials of the present invention may be prepared using any known and/or convenient method.
  • the precursor materials may be heated in a furnace so as to facilitate a solid state reaction process.
  • the conversion of a sodium-ion rich material to a lithium-ion rich material may be effected using an ion exchange process.
  • Typical ways to achieve Na to Li ion exchange include:
  • Figure I is an XRD pattern for Na 4 Mn 3 (P2O 7 ) (P0 4 ) 2 prepared according to Example 4c;
  • Figure 2 is an XRD pattern for Na 4 Co 3 (P0 4 ) 2 (P 2 0 7 ) prepared according to Example 5c;
  • Figure 3 is an XRD pattern for Na 4 Ni 3 (P0 4 ) 2 (P 2 0 7 ) prepared according to Example 6c;
  • Figure 4 shows the first cycle constant current data for an electrode according to the present invention comprising Na 4 Mn 3 (P0 4 ) 2 P 2 0 7 prepared according to Example 4c;
  • Figure 5 is an XRD pattern for Na 4 Fe 3 P 2 0 7 (P0 4 ) 2 prepared according to Example 7;
  • Figure 6 is an XRD pattern for Na 7 V 4 (P 2 0 7 ) 4 P0 4 prepared according to Example 8;
  • Figure 7 shows the first cycle constant current data for the Na 4 Fe 3 P 2 0 7 (P0 4 ) 2 active material
  • Figure 8 shows the first cycle constant current data for the Na 7 V 4 (P 2 0 7 ) 4 P0 4 active material.
  • Figure 9 is an XRD pattern for Na 7 V 3 (P 2 0 7 ) 4 prepared according to Example 9;
  • Figure 10 shows the first cycle constant current data for the Na 7 V 3 (P 2 0 7 ) 4 active material.
  • Active materials used in the present invention are prepared on a laboratory scale using the following generic method:
  • the required amounts of the precursor materials are intimately mixed together and then the resulting precursor mixture is pelletized using a hydraulic press.
  • the pelletized material is then heated in a tube furnace or a chamber furnace using either a flowing inert atmosphere (e.g. argon or nitrogen) or an ambient air atmosphere, at a furnace temperature of between about 500°C to about 1000°C until reaction product forms, as determined by X-ray diffraction spectroscopy. When cool, the reaction product is removed from the furnace and ground into a powder.
  • a flowing inert atmosphere e.g. argon or nitrogen
  • ambient air atmosphere ambient air atmosphere
  • Furnace Parameters Muffle furnace, Gas type (Ambient air)
  • Furnace Parameters Muffle furnace, Gas type (Ambient air)
  • Furnace Parameters Muffle furnace, Gas type (Ambient air)
  • Furnace Parameters Muffle furnace, Gas type (Ambient air)
  • Ramp rate 3°C/min; temperature: 300°C; dwell time: 6 hours
  • EXAMPLE 4b TARGET MATERIAL: Na 4 Mn 3 (P04)2(P207) Starting materials: Na 4 P 2 0 7 (1 .29g)
  • Furnace Parameters Muffle furnace, Gas type (Ambient air)
  • Example 4a Conditions of Example 4a, followed by a ramp rate: 3°C/min; temperature: 500°C; dwell time: 6 hours
  • Furnace Parameters Muffle furnace, Gas type (Ambient air)
  • Example 4b Conditions of Example 4b, followed by a ramp rate: 3°C/min; temperature: 700°C; dwell time: 6 hours
  • Furnace Parameters Muffle furnace, Gas type (Ambient air)
  • Ramp rate 3°C/min; temperature: 300°C; dwell time: 6 hours
  • Furnace Parameters Muffle furnace, Gas type (Ambient air)
  • Furnace Parameters Muffle furnace, Gas type (Ambient air)
  • Example 5b Conditions of Example 5b followed by a ramp rate: 3°C/min; temperature: 700°C; dwell time: 6 hours
  • Furnace Parameters Muffle furnace, Gas type (Ambient air)
  • Ramp rate 3°C/min; temperature: 300°C; dwell time: 6 hours
  • Example 6a Conditions of Example 6a followed by a ramp rate: 3°C/min; temperature: 500°C; dwell time: 6 hours
  • Furnace Parameters Muffle furnace, Gas type (Ambient air) Conditions of Example 6b followed by a ramp rate: 3°C/min;
  • Furnace Parameters Tube furnace, Gas type (argon)
  • Furnace Parameters Tube furnace, Gas type (nitrogen)
  • Furnace Parameters Tube furnace, Gas type (nitrogen)
  • the resulting product materials were analysed by X-ray diffraction techniques using a Siemens D5000 XRD machine to confirm that the desired target materials had been prepared and to establish the phase purity of the product material and to determine the types of impurities present. From this information it is possible to determine the unit cell lattice parameters.
  • a lithium metal anode test electrochemical cell containing the active material is constructed as follows:
  • the positive electrode is prepared by solvent-casting a slurry of the active material, conductive carbon, binder and solvent.
  • the conductive carbon used is Super P (Timcal).
  • PVdF co-polymer e.g. Kynar Flex 2801 , Elf Atochem Inc.
  • acetone is employed as the solvent.
  • the slurry is then cast onto glass and a free-standing electrode film is formed as the solvent evaporates.
  • the electrode film contains the following components, expressed in percent by weight: 80% active material, 8% Super P carbon, and 12% Kynar 2801 binder.
  • an aluminium current collector may be used to contact the positive electrode, or alternatively, metallic lithium on a copper current collector may be employed as the negative electrode.
  • the electrolyte comprises one of the following: (i) a 1 M solution of LiPF 6 in ethylene carbonate (EC) and dimethyl carbonate (DMC) in a weight ratio of 2:1 ; (ii) a 1 M solution of LiPF 6 in ethylene carbonate (EC) and diethyl carbonate (DEC) in a weight ratio of 1 :1 ; or (iii) a 1 M solution of LiPF 6 in propylene carbonate (PC).
  • a glass fibre separator (Whatman, GF/A) or a porous polypropylene separator (e.g. Celgard 2400) wetted by the electrolyte is interposed between the positive and negative electrodes.
  • Figure 4 shows the first cycle constant current data for the Na 4 Mn 3 (P0 4 ) 2 P 2 0 7 active material (prepared in Example 4c).
  • the Open Circuit Voltage (OCV) of the as-made cell was 3.22 V vs. Li.
  • the constant current data were collected using a lithium metal counter electrode at a current density of 0.1 mA/cm 2 , between voltage limits of 1.00 and 4.60 V.
  • the testing was carried out at room temperature. It is assumed that sodium is extracted from the active material during the initial charging of the cell. A charge equivalent to a material specific capacity of 57 mAh/g is extracted from the cell.
  • Figure 7 shows the first cycle constant current data for the Na 4 Fe 3 (P0 4 ) 2 P 2 0 7 active material (prepared as in Example 7).
  • the Open Circuit Voltage (OCV) of the as-made cell was 2.93 V vs. Li.
  • the constant current data were collected using a lithium metal counter electrode at a current density of 0.04 mA cm 2 , between voltage limits of 2.0 and 4.0 V vs. Li.
  • the testing was carried out at room temperature. It is assumed that sodium is extracted from the active material during the initial charging of the cell. A charge equivalent to a material specific capacity of 130 mAh/g is extracted from the material.
  • V vs. Li The constant current data were collected using a lithium metal counter electrode at a current density of 0.04 mA/cm 2 , between voltage limits of 3.0 and 4.4 V vs. Li. The testing was carried out at room temperature. It is assumed that sodium is extracted from the active material during the initial charging of the cell. A charge equivalent to a material specific capacity of 76 mAh/g is extracted from the material.
  • Figure 10 shows the first cycle constant current data for the Na 7 V 3 (P 2 0 7 ) 4 active material (prepared as in Example 9).
  • the Open Circuit Voltage (OCV) of the as-made cell was 3.15
  • V vs. Li The constant current data were collected using a lithium metal counter electrode at a current density of 0.02 mA/cm 2 , between voltage limits of 3.0 and 4.7 V vs. Li. The testing was carried out at room temperature. It is assumed that sodium is extracted from the active material during the initial charging of the cell. A charge equivalent to a material specific capacity of 163 mAh/g is extracted from the material.
  • Na 7 V 3 (P 2 0 7 ) 4 material during the initial charging process, enters the electrolyte, and is displaced by being 'plated' onto the lithium metal anode (i.e. releasing more lithium into the electrolyte). Therefore, during the subsequent discharging of the cell, it is assumed that a mix of lithium and sodium is re-inserted into the material. The re-insertion process

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Secondary Cells (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
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Abstract

L'invention concerne des électrodes qui contiennent des matériaux actifs de formule : Naa XbMcM'd(polyanion condensé)e(anion)f ; où X représente un ou plusieurs des ions Na+, Li+ et K+ ; M représente un ou plusieurs métaux de transition ; M' représente un ou plusieurs métaux n'étant pas de transition ; et où a > b ; c > 0 ; d ≥ 0 ; e ≥ 1 et f ≥ 0. De telles électrodes sont utiles, par exemple, dans les applications de batteries sodium-ion.
PCT/GB2012/052363 2011-09-30 2012-09-25 Électrode à base de polyanion condensé WO2013045905A1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US14/348,485 US9608269B2 (en) 2011-09-30 2012-09-25 Condensed polyanion electrode
EP12769157.4A EP2761687B1 (fr) 2011-09-30 2012-09-25 Électrode à base de polyanion condensé
KR1020147008636A KR101961781B1 (ko) 2011-09-30 2012-09-25 축합된 다중음이온 전극
CN201280047816.9A CN103843178B (zh) 2011-09-30 2012-09-25 缩聚阴离子电极
PL12769157T PL2761687T3 (pl) 2011-09-30 2012-09-25 Elektroda ze skondensowanego polianionu
JP2014532471A JP6063468B2 (ja) 2011-09-30 2012-09-25 凝縮ポリアニオン電極
DK12769157.4T DK2761687T3 (en) 2011-09-30 2012-09-25 condensed polyanionelektrode
ES12769157.4T ES2565501T3 (es) 2011-09-30 2012-09-25 Electrodo polianiónico condensado

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1116877.0 2011-09-30
GB1116877.0A GB2495279A (en) 2011-09-30 2011-09-30 A condensed polyanion electrode material

Publications (2)

Publication Number Publication Date
WO2013045905A1 true WO2013045905A1 (fr) 2013-04-04
WO2013045905A4 WO2013045905A4 (fr) 2013-05-23

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US (1) US9608269B2 (fr)
EP (1) EP2761687B1 (fr)
JP (1) JP6063468B2 (fr)
KR (1) KR101961781B1 (fr)
CN (1) CN103843178B (fr)
DK (1) DK2761687T3 (fr)
ES (1) ES2565501T3 (fr)
GB (1) GB2495279A (fr)
PL (1) PL2761687T3 (fr)
WO (1) WO2013045905A1 (fr)

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US20150180024A1 (en) * 2012-06-12 2015-06-25 Toyota Jidosha Kabushiki Kaisha Positive electrode material for sodium batteries and method for producing same
US20160164095A1 (en) * 2013-08-16 2016-06-09 Sk Innovation Co., Ltd. Positive Electrode Active Material for Secondary Battery
CN105684198A (zh) * 2013-10-24 2016-06-15 丰田自动车株式会社 钠电池用正极活性物质和钠电池
US9660253B2 (en) 2011-08-29 2017-05-23 Toyota Jidosha Kabushiki Kaisha Positive electrode active material for sodium battery, and method of producing the same
CN115650196A (zh) * 2022-09-09 2023-01-31 株洲冶炼集团股份有限公司 一种偏磷酸锌的合成方法及其在硫酸锌溶液除铊中的应用
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US11289700B2 (en) 2016-06-28 2022-03-29 The Research Foundation For The State University Of New York KVOPO4 cathode for sodium ion batteries
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US11251430B2 (en) 2018-03-05 2022-02-15 The Research Foundation For The State University Of New York ϵ-VOPO4 cathode for lithium ion batteries
CN108539157A (zh) * 2018-04-03 2018-09-14 武汉大学 一类高功率钠离子电池正极材料及其制备方法
CN113054184B (zh) * 2019-12-27 2023-03-10 深圳新宙邦科技股份有限公司 一种对称钠离子电池及其制备方法
CN111883766B (zh) * 2020-07-30 2023-05-23 西南大学 一种聚阴离子电极材料及其制备方法和应用
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